143173 has 4 divisors (see below), whose sum is σ = 148140. Its totient is φ = 138208.

The previous prime is 143159. The next prime is 143177. The reversal of 143173 is 371341.

143173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68644 + 74529 = 262^2 + 273^2 .

It is a cyclic number.

It is not a de Polignac number, because 143173 - 2⁵ = 143141 is a prime.

It is a Duffinian number.

143173 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 143173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2440 + ... + 2497.

It is an arithmetic number, because the mean of its divisors is an integer number (37035).

2¹⁴³¹⁷³ is an apocalyptic number.

It is an amenable number.

143173 is a deficient number, since it is larger than the sum of its proper divisors (4967).

143173 is an equidigital number, since it uses as much as digits as its factorization.

143173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966.

The product of its digits is 252, while the sum is 19.

The square root of 143173 is about 378.3820820282. The cubic root of 143173 is about 52.3142947593.

The spelling of 143173 in words is "one hundred forty-three thousand, one hundred seventy-three", and thus it is an iban number.